2011-2016 LML 3" Duramax Downpipe (V-Band / 3-Bolt)

3" LML Duramax Downpipe - V-Band or 3-Bolt

True 3-inch mandrel-bent downpipe for 2011-2016 Chevy Silverado and GMC Sierra 2500HD/3500HD with the 6.6L Duramax LML. Replaces the crushed, restrictive factory downpipe for improved turbo flow and lower EGTs.

What You Get

• True 3.00" internal diameter from end to end - no stepped or reduced sections
• 304 stainless steel mandrel-bent tubing for maximum corrosion resistance
• Zinc-coated CNC flanges for a precise, leak-free seal
• Pre-wrapped in high-temperature fiberglass heat insulation - protects surrounding components
• All 3 factory emissions sensor bungs included (EGT and pressure sensors)
• TIG-welded, jig-built construction with heavy-duty OEM downpipe support bracket tab

Why Upgrade Your Downpipe?

The factory LML downpipe is one of the biggest flow restrictions in the stock exhaust system. It's crushed and kinked from the factory to clear chassis components. A true 3" mandrel-bent downpipe opens up that bottleneck, helping your turbo breathe, spool faster, and run cooler. This is one of the highest-impact single modifications you can make to an LML.

Fitment

• Engine: 6.6L Duramax LML
• Years: 2011-2016
• Trucks: Chevy Silverado 2500HD/3500HD, GMC Sierra 2500HD/3500HD
• Flange: Choose V-Band (2011-2015) or 3-Bolt (2015.5-2016)

Need Help?

Not sure which flange type your truck has? Text us at (512) 522-9403 or email slabindustriesdiesel@gmail.com - we'll help you identify the right downpipe for your LML.